Ep 4. The Ends of the Earth

Leonardo continues his quest for the Book of Leaves, travelling to South America along with Riario and Zoroaster. Meanwhile, Lorenzo orders Piero da Vinci to track down his errant son, who he believes to be involved in the plot against him. In Peru, Leonardo and Zoroaster build a flying machine to reach a hidden temple, where they hope to find the next clue to the book's whereabouts. However, they are ambushed by a rival explorer, who has allied with the Incas. Back in Florence, the Pazzi plot against the Medici family takes a dramatic turn, with unexpected consequences for both Clarice and Giuliano.